Lock



April 26, 1938. P. w. OLSON LOCK Filed Feb. 28, 1936 2 Sheets-Sheet l- Patented Apr. 26, 1938 UNITED I STATES PATENT} orrles 2,115,042 LOCK Phillip W. Olson; Grand Rapids, Mich. :Application Family 28,1936, Serial No. 66,176

' 13 Claims (cum-21) This invention relates in general to looks and has more particular reference to a padlock which has a combined key operated and combination lock.

The-principal object of the invention is in the provision of combinationand co-operatinglock parts by which the lock may be operated either as a variable dial combination lock or asakey operated lock. 7 Further objects of the invention are in the pro vision of an improved lock which is simple and strong, durable in construction and adapted to.

be economically manufactured. V V

Inthe drawings which illustrate a preferred embodiment of the invention is a padlock of the movable shackle type, a

Figs. 1, 2 and 3 are front, side and rear ele: vations respectively; r Fig. 4 is a face view of the lock mechanism with the top plate and combination discs removed;

Fig. 5 is areverse sectional view of the underside of the lock plate;

Fig. 6 shows the interior with all combination discs in place; IEFig. '7 is an interior View showing the housing below the lock plate;

8 is a median sectional view of the lock; Figs. 9 and 10 are side and face views respectively of the second combination disc; and

Figs. 11 and 12 are side and face views respectively of the third combination disc. Combination padlocks of this type arerlarticularly adapted for use in connection with various types of closures where the ordinary or intended operation is by means of a knob and a plurality of combination discs, and an independently keyoperated 'lock is connected thereto by a locking plate which is common to both mechanisms. 'The key lock may be operated by a master key.

Referring now more particularly to the draw-,

ings, the lock which is shown in closed or locked position .comprises an outer casing I5, an inner housing or frame 16, a locking disc I! mounted within the casing, movable with respect to the housing and independently operated from the combination side of the lock or by using a'key from the other side, thereby having .two distinct locks for operating a common locking disc.

At one side of the locking disc and mounted in a suitable bore in the casing I6 is a tumbler lock 13 operable by a key l9 inserted through a key opening in the casing. The tumblers 18a of the lock are engageable'with recesses 2| in the housing I6 andare withdrawnin a wellknown manner-by the insertion of a proper key P9 "so that the lock tumbler !8 may be turned, carrying with it the lock plate I1. p

The lock plate has a marginal extension 22 forming a bolt adapted to engage in a curved slot 23 at the shorter end of a shackle 24 insertable through an opening in-the casing l5, the other end of the shackle extending through another opening in the casing and seated in an opening 25 in the housing It. At this end of the shackle it has a notch or groove 26 along one side engaged by a locking pin 21 inserted in the housing at one side of the opening 25 to limit 'the move merit: of the shackle within the casing. This extremity of the shackle is also provided with an end opening 28 for seating one end of a spring 29, the other end of which engages in a recess -39 in the housing member l6 and tends to press the shackle outwardly.

The extremity of the inserted end of the shackle 24 is also engaged by one end of a release pawl 3! mounted on a pivot 32 intermediate its ends, the pivot being in the form of a screw inserted in a boss 33 of the housing and the other end of the pawl having a cam 34 and a recess 35; A spring 36 is coiled about the pivot and engages the pawl to press it against the end ofthe shackle and when the shackle is raised the spring presses the pawl outwardly until the opposite end engages a stud 37 carried by the lock plate H to limit outward movement of the pawl.

This stud 37 is also adapted to engage in the recess 35 when the lock plate I! is turned to release the shackle 24, thereby locking the lock plate against reverse movement until the shackle is closed to a position where it comes in contact with the release pawl 3|. The lock'plate andits bolt 22 are drawn to locking position by a coil spring 39, one end of which engages a projection 40 struck out of the edge of the plate and the other end attached to a pin 4! inserted atthe edge of the housing and extending through a marginal notch 42 in the plate I! to'limit the movement of the plate. By a movement to the left in Fig. 4 or counter-clockwise, the plate H and its'bolt 22 are disengaged from the shackle; the spring 29 presses the shackle outwardly in an unlocked position, and locking stud 31 engages in the recess 35, thereby holding the locking plate against locking movement until the'shac'kle is closed to engage the end of the release pawl3l which automatically releases the plate for locking movement by the spring 39. In the combination lock, a cover plate "43 is inserted against a shoulder at the top of the casing and the casing turned over the edge to hold the plate in position in a well known manner. A graduated outer dial 44 conforming to the cover is secured to the. shaft of a' turntable knob 45 which moves the dial and its graduations relative to a mark or zero point 430. on the cover plate. Within the casing the rotatable plug of lock tumbler l8 has an extension 46 upon which are rotatable a number of combination discs 41 and 48, and a corresponding disc 49 is secured to the inner end of the shaft of'the knob 45 thereby with the dial 44 holding the knob in place with respect to the cover plate 43 and locating it for operating the other combination discs 48 and 41.

These discs 41, 4 8 and 49 have cooperating projections 56, i and 52, and 53 respectively,

and also have corresponding notches 54, 55 and 56 which are brought to register with each other in a well known manner'to form agate when the proper combination is obtained vby turning the knob first to the right, lining up one disc, then to the left, lining up the second disc then to the right again lining up the third disc. Between the. discs are spacingwashers 51.

Within a central recess 58 of the plate I! and surrounding the stem extension 46 is a disc 59 having an extension 59a .adapted to engage in a recess 58a of the disc I1, the central portion'of the disc 59 having an openingfor receivingthe extension 46 and having extensions 59b of the opening for engagingprojections 66 at the base of the'extension 46 where it joins thecylinder of lock 18. Between this disc 59 and the bottom disc, is a flat spring 41a; to press the discs apart and to press discs 47 and 48 and washers 57 together toward the disc 49. v

Mounted upon a pivot 63 projecting from lock plate IT is a locking pawl 62 in the form of'a,

lever having a right angled extension 64 at one end to engage in the notches in the lockingdiscs when they. are in alignment and thus to connect 4 the plate I"! for unlocking movement with the discs when'rotated by the knob 44 of the lock. This locking pawl has a spring 6i around the pivot with one end secured to a post 65 at the edge of the locking plate and the other, end of the spring extending through an opening 66 in theend projection 64 thereby tending to press the projection into the gate formed by. the

notches of the lock discs. The post 65 also limits the outward movement of the pawl 62.

Secured to the locking pawl 62 near the extension 64 is a contact pin 13 which projects through an opening 14 in the plate H and into the path of cam 34 on the release pawl.

When the lock plate I! is moved to the left or counterclockwise, either by the key lock or the combination knob, the'locking rim bolt 22 re- 7 leases the shackle which springs outwardly because of its spring 29, and the lock plate spring.

39 is tensioned. Outward movement of the shackle frees the release pawl 31 which springs outwardly until it engages stud 3! carried by locking plate I1 and as the plate is rotated to opening position it rides along the side of the pawl until it becomes seated in the recess 35. This prevents the return of the plate l! by means of its spring 39 until the shackle is returned.

The notch 56. of the outer locking disc 49 attached to knob 45 has an inclined edge 61 so that the above releasing movement of the plate I! automatically presses the gate extension 64 out of the disc notches releasing the discs so they cannot operate plate I! as long as the shackle is out. The disc 41 is held against movement by a small ratchet pawl 68 mounted on a pivot 69:

. tion only.

teeth 12 on the inner lock disc 41 by its spring.

I6 when the plate I! is moved to unlocking'position as the cam 34 then engages the locking pawl pin 13 and holds the extension 64 of the pawl 62 from re-engagement with the combination disc notches. In releasing the shackle, after the combination has been set, the dial is moved.

counter-clockwise automatically. throwing out pawl extension 64 and by this same movement throwing the discs 41, 48 and 49 out of align- --ment, so they must be reset to again operate the lock.

A proper key l9 inserted in the lock withdraws the tumblers and turns the lock plug with'f projections 66, thereby turning 'disc 59 and projections 59a thereof engaging the recess 58a of the disc I], and releasing the shackle 24 as before explained.

Thus the lock is operated either by the combination. means controlledby the knob, or by a. key. Both mechanisms relate to anddepend for operation upon a common locking plate which isactuated and set for the return of the shackle.

When the shackle is released and 'movedoutwardly under the action of its spring 29, the holding pin 21 engages in a groove around the shackle near its end, and the other end is free from the '30 casing, so that it may beswung entirely around about the mounted end but in this outer posi- When the shackle is returned to the casing the mounted end engages the release pawl 3l-which is rocked about its pivot disengaging its lock recess 35 from lock plate stud 31' and allowing the lock plate to snap back under the action of'its spring 39. This also releases the locking pawl and its pin .13 from engagement with the cam 34 and allows its spring 6| to press the extension 64 against the discs and at the same time withdraws the lock pawl 68 from its disc engaging position. The parts are thus restored to position for operation by either lock means.

' bination disc lock and by a key operated tumbler lock may also be incorporated in other types of locks when the function is to release a common atone. side of the casing, a knob operated com-.

bination look at the opposite side of the casing,v

and a common locking member actuated by. the key or the knob to release the locking member. 7 3. A lock comprising a key operated barrel plug having a key openingat one side, a plu-' rality of combination lock discs mountedon the plug and a knob for actuating them at the side opposite the key opening, and a common lock On the outer lock disc 46 are spaced projec member also mounted on the plug and actuated both by the key and by the knob.

4. A look comprising a key operated plug having an inner extension, combination lock discs on the extension and means for adjusting them, a common locking plate mounted on the extension and actuated by the plug, and means carried by the plate for engaging the discs for also actuating the plate by said adjusting means.

5. In alock having combination discs a tumbler lock and a common locking plate, a spring tending to hold the plate in locking position, a spring actuated member locked by the plate, a release lever engaged by the member in its locked position, and a projection carried by the plate and engaged by the lever to hold the plate against movement from an unlocked position by its spring until the spring actuated member is returned to its locked position.

6. A look having a circular casing with key operated and combination disc looks at opposite sides having a common locking plate, a shackle member movable through the casing having a curved cut at one side, and the locking plate having a projection with a curved rim extension to enter the cut for locking the bolt.

'7. A look having a casing with a locking plate movable therein, different lock mechanisms on opposite sides of the plate for operatively moving it, and a lever on one side of the plate having means for engaging the plate in its release position to prevent the operation of the mechanism on the other side of the plate until the locking plate is returned from its release position.

8. A lock having a casing, a movable shackle, a locking plate for engaging and releasing the shackle, different look mechanisms on opposite sides of the plate for moving it to release the shackle, a lever engaged by the shackle in its locked position, and a projection carried by the plate engaged by the lever to hold the plate in a release position until the shackle is returned to engage the lever.

9. In a look, a movable locking plate, different locking mechanisms on opposite sides of the plate to operate it, a lock member engaged by the plate, a lever on one side of the plate engaged by the member when it is in locked position, the mechanism on the other side of the plate including a pawl having a projection extending through the plate and engaged by the lever to prevent the operation of either mechanism until the lock member is returned to locked position.

10. In a lock, a key operated and a disc combination lock' mechanism having a common movable locking plate, a shackle movable in the lock having one end engaged by the plate, a lever engaged by the other end of the shackle in closed position and having a cam on the lever, and a release pawl pivoted to the plate engaged by the said discs and having a projection extending through the plate and engaged by said cam when the plate is moved to release the shackle thereby throwing out the release pawl from engagement with the combination discs.

11. A structure in accordance with claim 10 in which the release pawl has a projection at one end and the discs have notches movable into alignment to seat the projection, and a spring pressed pawl at the other end of the release pawl movable to engage one of the discs to hold it against rotation when the release pawl is disengaged at its other end.

12. A key operated and disc combination lock mechanism having a common spring pressed locking plate, a shackle engaged by the plate and a lever engaged by the shackle in its locked position, the lever having an engaging notch and a cam on the end away from the shackle, a projection on the plate to engage the said notch to prevent reverse movement of the plate, a release pawl pivoted on the plate having a projection to engage the combination discs and having a pin extending through an opening in the plate in the path of the cam to move the release pawl out of position to engage the discs when the plate is moved to release the shackle, and the lever engaged by the shackle releasing the lever from engagement with said projection allowing the spring to return the plate and restoring both lock mechanisms to operative position.

13. A key operated and disc combination padlock having a circular casing and a shackle mounted therein for endwise movement to release one end thereof and the other end having an end groove allowing it to rotate only in outermost position, a circular cut in the short side of the shackle, a common locking plate actuated by either lock mechanism having an edge projection to engage in said out, a spring tending to rotate the plate to engage the shackle, and means actuated by the shackle to prevent the movement of the plate by its spring when the shackle is moved out of its locked position.

PHILLIP W. OLSON. 

